I’m a young convert to the Faith.( I’m living with my parents while I finish university) My parents are very anti-Catholic and won’t allow me to attend Mass. I’m over 18 so they can’t legally stop me. However, I want to do my best to honor God while also honoring my parents. I could call the police( theyd talk to my parents and take care of things) but as I said, I want to do my best to honor them.

What should I do?

Have you spoken with a local traditional priest? Certainly your parents are not aware of what you do 24/7, I would suggest trying to schedule a meeting on a weekday or Saturday to explain your situation. Perhaps you could find a Catholic of the same sex that you could live with while attending university? 

I grew up in the Novus Ordo, attending their schools from first grade through high school. I always thought there must be something wrong with me because I was unmoved, uninspired by all the masses I had to sit through. 
I turned my back on what I thought was the Catholic church by my late teens. 
I still had a thirst for God and explored a number of protestant churches in my twenties.
Then something totally unexpected happened. In my thirties a coworker invited me to attend a Tridentine mass in Chicago. I was moved in such a way that I immediately knew this was real Catholicism.
That simple invitation, that gesture by a coworker was all it took to get me on the right path.
So, for those of you who have unbelieving relatives and friends...let them experience the true mass instead of trying to persuade them with well reasoned arguments. You can knock on a deaf man's door forever without getting a response, better to let God open their eyes and ears.
If they turn down your invitation then keep praying for them!  

I’m a young convert to the Faith.( I’m living with my parents while I finish university) My parents are very anti-Catholic and won’t allow me to attend Mass. I’m over 18 so they can’t legally stop me. However, I want to do my best to honor God while also honoring my parents. I could call the police( theyd talk to my parents and take care of things) but as I said, I want to do my best to honor them.

What should I do?

There is a lot of good advice given here. But if the situation at home becomes too difficult and if you can move out, then do so. You can always do what hundreds of Traditional Catholics have done (assuming you are a man), ask for a job here: Contact Us - The Onyx Collection which gives them an opportunity to move and have a modest income while you get your situation stabilized. 

If possible, move out on your own.

Then you can still honor your parents and visit them, but the friction will much be less intense, since you are not seeing them everyday.

If there's not a real threat to your life, you can simply disobey them and go to mass anyway.

Avoid any talk about religion. You will diminish the occasions for fruitless and violent discussion this way.

You are in a difficult situation with your parents.  Sometimes distance is a good thing to honor them.  Sometimes an hour away isn’t always far enough.  lol. 

You can always work on a farm in summer in the northeast of USA.  They provide housing rent free if you work for them.  Most is seasonal summer work.  Depending on you work, you can work year round and go to school at night.  Many local community colleges are paid by the tax payers so student who are residents go for free.  

What’s your major in college?  Sometimes colleges are too liberal and costly in the long run. 

 Many young people in our area worked for people and went to school and have their own electrical, plumbing, heating, computer repairs, hair dresser, etc. businesses.